I love this post by Gary Lamb.
Every chance I get I try to help people understand what it feels like for a non-Christian to come to a church for the first time. Bizarre, intimidating, and weird come to mind. We had a guy at Forefront who drove into our parking lot like 5 or 6 Sunday mornings in a row but could never get his guts up to actually walk in! And I bet that’s more normal than you think.
I always tell Christians/pastors that they should attend something completely out of the ordinary for them, something that will make them feel totally uncomfortable, so they can feel those feelings. Like maybe go to a mosque for a Muslim service.
Gary went to a church as a first time guest on Sunday and his thoughts about the experience are spot on. Seriously read his post, and then change what you do on Sunday mornings accordingly.